Construction
of Some Useful Linkages

The Sarrus linkage represents a way to achieve limited but exact
straight line motion from a combination of flexure (or revolute)
joints. A SolidWorks® depiction of how this linkage works is
shown below. Here, the right solid rectangle slides linearly back
and forth with respect to the left solid rectangle.

Although inherently 2D in nature, this linkage can still be constructed
from the basic kit parts of links and flexure elements as shown below
and then folded into its final configuration.